Electrosurgical Instrument Control Circuit for Adaptive Energy Modality Switching
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Solution Overview
Problem
Current surgical instruments lack advanced control systems to adapt energy delivery based on real-time tissue conditions, leading to inefficiencies and potential tissue damage during procedures.
Innovation Solution
A surgical instrument with an ultrasonic blade and clamp arm, featuring a control circuit that monitors parameters to switch between different energy modalities based on predetermined thresholds, ensuring optimal energy delivery and tissue interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single energy modality is used in surgical instruments, then the device complexity is reduced, but the adaptability to different tissue conditions deteriorates
Solution Approach 1:
The surgical instrument dynamically switches between ultrasonic and RF energy modalities based on real-time tissue conditions. The control circuit monitors tissue parameters and automatically transitions between energy types, making the system adaptive without requiring complex manual intervention from the surgeon.
Solution Approach 2:
The surgical instrument integrates multiple energy modalities (ultrasonic and RF) into a single device, enabling it to perform different surgical functions depending on tissue conditions. This multi-functionality allows one instrument to replace what would traditionally require multiple specialized tools.
2Manufacturing precision
If real-time parameter monitoring is implemented, then the manufacturing precision of energy delivery is improved, but the device complexity increases
Solution Approach 1:
The control circuit continuously monitors tissue parameters during surgical procedures and uses this feedback to adjust energy delivery in real-time. This closed-loop control ensures precise energy application while automatically adapting to changing tissue conditions, eliminating the need for manual calibration.
Solution Approach 2:
The surgical instrument autonomously monitors its own operating parameters and self-regulates energy delivery based on detected tissue conditions. The system performs self-diagnosis and self-adjustment, reducing the need for external monitoring equipment or complex manual control mechanisms.
3Productivity
If automatic energy modality switching is implemented, then the productivity of surgical procedures is improved, but the reliability of energy delivery may deteriorate
Solution Approach 1:
The automatic switching between ultrasonic and RF modalities is driven by real-time feedback from tissue parameter monitoring. This ensures that transitions occur only when appropriate, maintaining reliable energy delivery while improving surgical efficiency through automated adaptation to tissue conditions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The instrument effectively adjusts energy delivery in real-time, enhancing precision and safety by transitioning between energy modes based on monitored parameters, improving tissue handling and procedural outcomes.
Implementation Method 1
a transducer configured to generate an ultrasonic energy output
Implementation Method 2
a waveguide configured to transmit the ultrasonic energy output to the ultrasonic blade
Data Source
AI summary
A surgical instrument is disclosed. The surgical instrument comprises an end effector comprising an ultrasonic blade and a clamp arm. The clamp arm is movable relative to the ultrasonic blade to transition the end effector between an open configuration and a closed configuration to clamp tissue between the ultrasonic blade and the clamp arm. The surgical instrument further comprises a transducer configured to generate an ultrasonic energy output and a waveguide configured to transmit the ultrasonic energy output to the ultrasonic blade. The surgical instrument further comprises a control circuit configured to monitor a parameter of the surgical instrument, wherein crossing an upper predetermined threshold of the parameter causes the control circuit to effect a first electromechanical system, and wherein crossing a lower predetermined threshold of the parameter causes the control circuit to effect a second electromechanical system different than the first electromechanically system.